Post-wildfire erosion rates and triggering of debris flows: A case study in Susa Valley (Bussoleno)

Post-wildfires geological hazards are an emerging problem in many places, including areas not typically associated with these events such as the Alpine Region. Hazards connected post-fire processes debris-flows and flood-type threatens people, infrastructures, services economical activities. Apart from a few examples, there is lack of models available to quantify increase susceptibility result modification induced by wildfires. In this work we test application modified version RUSLE, on GIS, erosive phenomena for case study north-western Italian Alps. The results its application, taking advantage high-resolution rainfall series data deriving field surveys, highlight marked (more than 20 times) erosion rates, quantified expressing both EI (erodibility index), A (monthly soil loss) SL sediment rise. months April, May June represents larger share total quantities. This consequence noticeable Erodibility Index EI, which scenario more one order magnitude higher pre-fire one.